Population of Gwanak-gu, Seoul
Resident registration data, June 2026 (MOIS)
Total population477,797people
Average age44.1yrs
Population structure
Population by age
10-year bands · by sexPopulation by age and sex
Unit: people
Male 240,032Female 237,765
Age structure
Unit: %
Youth 5.3%Working age 75.1%Seniors 19.6%
20s is the largest group, at 100,974 people.
Population change
Change over time
4-year trendUnit: people
486,946 in 2022477,797 in 2026
Down 1.9% over the past 4 years.
Population ranking
Sillim-dong has the largest population of the 3 neighborhoods.
Population by region
3| Region | Population | Share | Average age |
|---|---|---|---|
| Sillim-dong | 240,616 | 50.4% | 44.7 yrs |
| Bongcheon-dong | 220,024 | 46% | 43.4 yrs |
| Namhyeon-dong | 17,157 | 3.6% | 44.3 yrs |
The top three areas hold 100.0% of the population of Gwanak-gu, Seoul.
Other regions
Other districts in Seoul
16Frequently asked questions❓
Gwanak-gu, Seoul has 477,797 residents as of June 2026., 1,523 fewer than a year earlier.
Sillim-dong, home to 240,616 residents — 50.4% of Gwanak-gu, Seoul.
It is 44.1 as of June 2026., 1.5 years below the national average of 45.6. Among its neighborhoods, Bongcheon-dong is youngest at 43.4 and Sillim-dong oldest at 44.7.
It fell 1.9% over 4 years, from 486,946 in 2022 to 477,797 in June 2026.
This is resident registration data from Korea's Ministry of the Interior and Safety. Figures are as of the end of June 2026 and are updated monthly. The data is open under KOGL Type 1.
Resident registration counts people at their registered address. The census counts them where they actually live. The gap is widest in university towns and industrial areas, where many people never change their registered address.
Sources 🌐
- Resident registration data, Ministry of the Interior and SafetyKOGL Type 1 · as of June 2026 · updated monthly